This is a little channel scan utility to generate szap/tzap/czap/azap compatible channel lists. An atsc/dvbscan does not do a frequency scan, however, so you must manually provide the data for tuning to one or more start transponders. A number of initial-tuning-data files are provided for various dvb-c, dvb-s, dvb-t and atsc networks around the world. If you make a new one feel free to submit it to the linux-dvb mailing list http://www.linuxtv.org/lists.php. Basic usage: ./dvbscan dvb-s/Astra-19.2E | tee mychannels.conf or ./atscscan atsc/us-NTSC-center-frequencies-8VSB If you want it to check a specific frequency, tune to that frequency (e.g. using szap/tzap/czap/azap) and then use './dvbscan -c' or './atscscan -c'. For more scan options see ./dvbscan -h or ./atscscan -h atscscan is _just_ a copy of dvbscan to not confuse ATSC-user. Good luck, Holger + Johannes + Patrick (beat me for ATSC)